log.h 2.4 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
  4. * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
  5. */
  6. #ifndef __LOG_DOT_H__
  7. #define __LOG_DOT_H__
  8. #include <linux/list.h>
  9. #include <linux/spinlock.h>
  10. #include <linux/writeback.h>
  11. #include "incore.h"
  12. #include "inode.h"
  13. /**
  14. * gfs2_log_lock - acquire the right to mess with the log manager
  15. * @sdp: the filesystem
  16. *
  17. */
  18. static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
  19. __acquires(&sdp->sd_log_lock)
  20. {
  21. spin_lock(&sdp->sd_log_lock);
  22. }
  23. /**
  24. * gfs2_log_unlock - release the right to mess with the log manager
  25. * @sdp: the filesystem
  26. *
  27. */
  28. static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
  29. __releases(&sdp->sd_log_lock)
  30. {
  31. spin_unlock(&sdp->sd_log_lock);
  32. }
  33. static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp,
  34. unsigned int value)
  35. {
  36. if (++value == sdp->sd_jdesc->jd_blocks) {
  37. value = 0;
  38. }
  39. sdp->sd_log_head = sdp->sd_log_tail = value;
  40. }
  41. static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip)
  42. {
  43. struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
  44. if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp))
  45. return;
  46. if (list_empty(&ip->i_ordered)) {
  47. spin_lock(&sdp->sd_ordered_lock);
  48. if (list_empty(&ip->i_ordered))
  49. list_add(&ip->i_ordered, &sdp->sd_log_ordered);
  50. spin_unlock(&sdp->sd_ordered_lock);
  51. }
  52. }
  53. extern void gfs2_ordered_del_inode(struct gfs2_inode *ip);
  54. extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct);
  55. extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
  56. extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
  57. extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
  58. extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
  59. u64 seq, u32 tail, u32 lblock, u32 flags,
  60. int op_flags);
  61. extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
  62. u32 type);
  63. extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
  64. extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
  65. extern void log_flush_wait(struct gfs2_sbd *sdp);
  66. extern int gfs2_logd(void *data);
  67. extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
  68. extern void gfs2_glock_remove_revoke(struct gfs2_glock *gl);
  69. extern void gfs2_write_revokes(struct gfs2_sbd *sdp);
  70. #endif /* __LOG_DOT_H__ */